Awl mechanism for nailing-machines.



L, E. JOHNSON.

AWL MECHANISM FORNAILING MACHINES.

APPLICATION FILED JUNI15, 1913.

1,109,844. a ed Sept. 8, 1914.

3 SHEETS-SHEET 1.

Fig.1.

21 Witrwsscs: Inventor:

3. KM. 35 by THE NORRIS PETERS cn PHOTDVLITHO. wAsHlNcrmv, D c.

mnccEJohnson,

L. E. JOHNSON.

AWL MECHANISM FOR NAILING MACHINES.

APPLICATION FILED JUNE 5, 1913.

1,109,844 Patented Sept. 8,1914.

3 SHEETS-SHEET 2.

Fig.2..

THE NORRIS FETERS co, PHOTO-LHHO., .VASHINGTUN. u 1,.

I L. E. JOHNSON. AWL MECHANISM FOR NAILING MACHINES.

APPLICATION FILED JUNE 5, 1913.

3 SHEETSSHEET 3.

Jm/a/ML, ,J I

Patented Sept. 8, 1914.

Inventor: LawrenncEJohnson,

by "C Witnesses:

IHE NORRIS PETERS co PHOTO-LITHQ, WASHINGTON n c.

UNITED STATESPATENT OFFICE.

LAWRENCE E. JomvsoN, or WINTHBOB, MASSACHUSETTSQASSIGNOR 'ro JULIUS 1'ennsnor WORCESTER, MASSACHUSETTS}.

AWL MECHANISM FOR NA IL ING-MACHIN ES.

Specification of Letters 1atent. 1

Patented Sept. 8,1914.

Application'filed June 5, 1913. Serial No. 772,012.

To all whom it may. concern Be it known that I, LAWRENCE E. JoI-IN- SON,a citizen of the United States of America, and a resident of Winthrop,in the county of Suffolk and State of Massachusetts, have inventedcertain new and useful Improvements in: Awl Mechanism for Nailing-Machines, of which the following is a specification.

-This invention relates to machines for making and driving nails, andparticularly to machines of this class designed for use in themanufacture of boots and shoes, the object of the present inventionbeing to provide a simple construction of awl mechanism adapted topierce the work and then. feed the work with the awl therein so that thepuncture will be positioned beneath the driver when said awl has beenremoved from the work and returned to its normal position. I

This invention is an improvement on the nailing machine shown anddescribed in U. S. Letters Patent No. 1,078,147, issued to 111c Nov. 11,1913. v v 1 The inventionlconsists in certain novel features ofconstruction and arrangement of parts which will be fully understood byreferenceto the description ofthe drawings and to the claims hereinaftergiven.

Of the drawingsi Figure' l represents a front elevation of aimachineembodying the features of the present invention. Fig." 2 represents aside elevation of a portion of the same. Fig. 3 represents a sectionthrough the driving and oscillating shafts showing in elevation the cammechanism for operating the awl bar. Fig. 4 represents a horizontalsection of the front portion of same, the cuttingplane being on line 4-1 on Fig. 1. Fig. 5 represents a vertical section showing the cammechanism for controlling the movement of the nail carrying member, andFig. 6 represents a sectional detail on line 66 on Fig. 1. 1

Similar characters designate like parts throughout the several figuresof the drawmgs. I l

In the drawings, 10 is a framework having suitable bearings in which ismounted the revoluble shaftll having secured toii'ts front end a lifter'12,"andto its rearend the pulley 13 revoluble in the direction of thearrow a on Fig. 1 ofthedrawings. Inthe front end of the-frame 10 ismounted are 143is raised bymeans of the lifter 12 engag mg the collar orlifting block 16 secured thereto, andwhen the lifter 12 is disengagedfromjsaid collar 16 the driver bar is moved I downwardly by means of thedriving member 17; actuated by the coiled spring 18 all in a well-knownmanner. 'A reel 19 is provided fromwhichja wire 20 is fed by anywell-known mechanism "into a peripheral slot 21 in a nail carryingmember 22 pivoted at .23 to'theframe 10. When. a portion of the ,wire 20has been fed into the peripheral slot 21, movement of the nail carryingmemberf22 in the direction of the arrow 6 on Fig. of the drawings willcause that por-, tion ofthe wire positioned said slot to be separatedfrom the main portion of the wire 20, as shown and described in my previonspatentherein referred to, thus form'- ing anail which is adapted tobe carried by said member 22 into a position immediately ciprocatingdriver bar 14 having secured in its lower end a driver 15. The driverbar beneath the driver 15 so that when the driver bar l fisreleasedbymeans of the member 12 and saidbar is driven downwardly, thedriver 15 will force the nail throughfthe work 24 supported upon thehorn25 and positioned therein ,by means of the presser foot26.. The,mer'nber 22 is provided with a rearwardly 'extending arm provided withears 2.7 between which theupper face of said arm. is provided with aconcaved depression 28 as indicated in Figs. 4 and 5 of thedrawmgs. Y

Supported in the earsf27 with its. axis concentric to the M11 of said'concaved recess is a cylindrical pin 29 having flat sides intermediateits ends and on which is mounted the' movable forked block 30 havingformed thereon a radiatin g stud or pin 31.

This pin or stud '31;is positionedwithin a socket 32 formed in the lowerend of a lever 33 pivoted at 3 1 and having at itsnpper end a roller 35positioned in the cam path 36 of the cam disk 37 secured to andrevoluble with the driving shaft 11. As the cam disk 37 rotates in thedirection of the arrow 0 on 5 of the drawings, the rocking movementsimparted tothelever 33 will cause an oscillation of the member22aboutits pivot 23 in an obvious manner. During this operation ,it isevident that the pin 31 is adaptedto reciprocatein the socket32 and theblock 30 is adapted to reciprocate lengthwise of the pin 29 and tooscillate slightly about the axis of said pin, thus producing auniversal connection between the free end of the lever 33 and the outerend of the rearwardly extending arm of the nail carrying member 22.

The frame 10 is provided with an ear 38 in which is positioned anoscillating shaft 39 to the rear end of which is secured a lever 40 andto the front end of which is secured an arm 41. The frame 10 is alsoprovided with an extension 42 in the bearing in which is positioned anoscillating shaft 43 having securedto its rear end the lever 44 and toits frontend the forked member 45. The free end of the arm 41 haspivoted thereto an awl carrying bar 46, the lower end of which hasclamped thereto the awl 47. This awl carrying bar is provided with anear 48 having an elongated slot 49 therein, through which extends the.threaded shank 50 of a stud 51, the rear end of which has aiwasher 52secured thereto by means of the'screw 53. This stud 51'is provided witha peripheral flange 54 between which andthe washer 52 is interposed ablock 55 positioned within the slot 56 in the forked member 45, saidblock 55 being adapted to freely move about the axis of said stud. Thestud 51 may be moved in the slot 49 and secured in adjusted position bythe nut 50*, thereby varying the feedmovement of the awl 47, The freeend of the lever 40 is provided with a truck 57 positioned in the campath 58 of a disk 59secured to the driving shaft 11. The cam path is soconstructed as to cause an oscillation of the shaft. 39 and through thearm or lever 41 a reciprocating vertical movement of the awl bar 46. Theopposite side of the disk 59 is provided with a cam path 60 in which ispositioned-a roller 61 secured to the end of the lever 44, this cam path60 being so constructed as to produce an oscillation of the shaft 43,and through the forked member 45 areciprocatory movement of the awl-bar46.

The throws of the cams 58 and. 61 are so timed that a downward movementwill first be imparted to the awl-bar 46 to cause the awl 47 to piercethe work 24. During'this movement the member 22 is being moved about itspivot 23 so that the groove-21will be brought into the position shown inFig. 4. Then in this position an opportunity is given for the awl-bar 46to move laterally swinging about its pivotal connection with the lever41 and thereby feeding thework 24 the required distance, the amount ofmovement being dependent upon the-position of the stud 51 in the slot49. hen the feeding operation has been. completed" the awl 47 isdirectly beneath the driver 15. The awl is then withdrawn from the workby upward movement of the awl-bar 46 and as soon as it has been whollyremoveda lateral movement is imparted by the cams to the awl-bar toreturn the awl to 1ts normal position preparatory to another operation.

It will be observed that the combined operations of the cam members uponthe awlbar 46 causes the awl to travel in a rectangular path.

hen the awl 47 has returned to its normal position the member 22 with anail carried in its peripheral slot 21 will be moved about its pivot 23until the slot is beneath the driver 15 which is then permitted tooperate and the nail is driven into the work. 7

As the means for feeding the wire, form ing the nail, and driving itinto the work, are all substantially the same as shown and described insaid earlier patent referred to, no detailed description of thesemechanisms is herein given.

It is believed that the operation and many advantagesof this inventionwill be fully understood from the foregoing description.

Having thus described my invention, 1' claim: 1

1. In a device of the class described, th combination with a worksupport and driver, of a pivoted awl-carrying bar; means for operatingsaid'bar to cause said awl to move in a rectangular path to pierce andfeed'the work; a pivoted member having a pocket in its periphery forcarrying a nail into position below said driver; and means for movingsaid member about its pivot out of the path of said bar prior to thework feeding movement of the awl.

2. In a device of the class described, the combination with a worksupport and driver, of a pivoted awl-carrying bar;. means for operatingsaid bar to cause said awl to move in a rectangular path to pierce andfeed the work; a pivoted member having a peripheral nail carrying slotadapted to be brought into position beneath said driver; a pivotedlever; a universal connection between the freeends of'said lever andmember; and a cam for operating said lever to move said pivoted memberfrom the path of the awl bar prior to the work feeding movement thereof.I

3. In a device of the class described, the combination with a worksupport and driver, of a pivoted awl-carrying bar; means for operatingsaid bar to cause said awl to move in a rectangular path to pierce andfeed the work; a pivoted member having a peripheral nail carrying slotjadapted to be brought into position beneath said driver; a pivotedlever; a forked block carried by said memher and movable horizontallythereon; a pivotal connection between said block and the free end ofsaid lever; and a cam for operating said lever to move said pivotedmember from the path of the awl bar prior to its Work-feeding movementthereof. .1

a. In a device of the class described, the combination with aworksupport and driver, of a pivoted awl-carrying bar; means for operatingsaid bar to cause said awl to move in a rectangular path to pierce andfeed the work; a pivoted member having a peripheral nail carrying slotadapted to be brought into position beneath said driver; a pivotedlever;-a forked block carried by said memher and movable horizontallythereon; ,a pin extending outwardly from said block and adapted toreciprocate in a holein the 9 end of said'lever; and a cam for operatingsaid lever to move said pivoted member from the path of the awl-bar'prior to thework feeding movement thereo 5. In a device of the classdescribed, :the

combination with a work support and driver,

, ber and movable horizontally thereon; a

flat sided pin in said member on which said block is adapted toreciprocate; anda cam for operating said leverto move said pivotedmember from the pathof the awl-bar prior to its work-feeding movementthereof. j

6. In a device of the class described, the combination with a worksupport and driver,

of a pivoted awl-carrying bar; means for operating said bar to causesaid awl to-move in a rectangular path to pierce and feed the work;apivoted member having a periph-. eral nail carrying slot adapted tobebrought into position beneath said driver and also provided with anarm having two cars in its upper face; a fiat'sided pin movable in saidears; a block reciprocable on said pin and movable about the axisthereof provided with a radial cylindrical pin; a pivoted lever having asocket for said pin in which it is adapted to reciprocate; and a cam foroperating fsaid lever to move said pivoted member from the path of theawl-bar prior to the worlcfeeding movement thereof.

' Signed by me at at Post Oflice Sq., Boston,

Mass, this 29th dayof May, 1913.

' Witnesses:

MAURICE B. SPINozA, NATHAN G. LoMBARD.

C pi s of t is pa n m y e o t i f five centseach, by addressing theCommissioner Batents,

wa i g oni e G! LAWRENCE E, JOHNSON.

